1, will automatically power off, when the phone is fully charged, the phone will prompt electricity has been full, then the charger will not power the phone, so the charger also began to cool to room temperature.
2, when the charger detects the mobile phone battery voltage is lower than the rated voltage of the charger and starts to charge the mobile phone, the charger starts to heat up again.
3, in the hardware architecture of smart phones, as long as the wireless Modem part plus a certain peripheral circuit, such as audio chip, LCD, camera controller, microphone, speaker, power amplifier, antenna, etc., it is a complete hardware circuit of ordinary mobile phones (traditional mobile phones).